mathsurgery - Edexcel module H1.8

Higher Unit 1 Module 1.8		Contents: Integers	Time: 2 – 4 hrs
SPECIFICATION REFERENCES
N u	Understand place value and round to a given power of 10
N a	Add, subtract, multiply and divide integers and then by any number
N q, N u	Use a variety of checking procedures and consider whether a result is of the right magnitude
N q	Use brackets and the hierarchy of operations, ie BIDMAS
Learners should already be able to:
order positive numbers demonstrate understanding of place value add, subtract positive whole numbers up to 1000 multiply and divide with small positive whole numbers rapidly recall the complements of whole numbers to 10 example: 6 is the complement of 4 because 6 + 4 = 10 rapidly recall almost all multiplication facts to 10 10 and quickly work out the rest in their head multiply and divide whole numbers by 10
OBJECTIVES				Edexcel links
Use and order integers (positive and negative whole numbers
Add, subtract, multiply and divide with integers (positive & negative whole numbers)				Edex 2.1
Understand the order of operations (use BODMAS or BIDMAS) example: work out (8 + 4) * 5 – 24 / 8				Edex 2.1
Round whole numbers to the nearest, 10, 100, 1000, …				Edex 1.6
Multiply and divide whole numbers by a given multiple of 10				Edex 2.1
Check calculations by rounding example: 29 x 31 approx= 30 x 30				Edex 2.6
Check answers by reversing calculations example: check that 207 / 9 = 23 by making sure that 9 x 23 = 207				Edex 2.1
DIFFERENTIATION & EXTENSION
Estimate answers to calculations involving +, -, x and* Calculations with two or more operations on positive or negative whole numbers, then with positive or negative decimals Encourage effective use of a calculator
NOTES
It’s really important that learners get into good habits of presenting all their working clearly. To show working when using a calculator, learners should write down what has been entered into the calculator as well as the answers they get.

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Edexcel module H1.8